Shock-absorbing mechanism.



E. H. scHMm.

SHOCK ABSORBING MEEHANiSM. APPLHIATION FILED MAY H. 3916. RENEWED MAR. l2, i919.

Patented A pl. 29, 1919.

32313 @H'ozmcq tannin;

ERNEST H. SCHMIBT, 0F LAKEWOOD, OHIO, .tLStSIGNUR TO THE NATIONAL Ll ILPlLLEABLE CASTING-S CQMPANY, OF CLEVELAND, OHIO, A CGRPOBATION OF UHIQ.

SHGtlK-ABSURBING- MECHANISM.

neonate.

Specification of Letters Patent.

lPatcnted Apr. 2%, llllttl.

Application filed may 17, 1916, Serial No. 9&006. Renewed March 12, 19191. Serial No. 28%,197.

To all whom it may concern Be it known thatl, ERNEST .l-l. Scrriino'r, a citizen of the United States, and a resldent of Lakewood, Cuyahoga county, Ohio, have invented new and useful Improvements in ShocleAbsorbing Mechanisms, of which the following is a specification, reference being had to the accompanying drawings, in which Figure 1 is a section showing the application of my improvements to a shock absorbing mechanism of the included friction member type; Fig. 2 is a section on lines 22 of Fig. 1; Fig. 3 is a section showing;- the manner of applying the insert to the part to which it is attached; Fig. 4; is a section of a modified form of my device; Fig. 5 is a section of the insert intended to be applied to the construction of Fig. l; and Figs. 6 and 7 are sections of further modifications embodying my improven'lents.

My invention relates to shock absorbing or cushioning mechanism, and is particularly adapted for use in a gear of the type shown in the co-pending application of Chester K. Brooks and Ernest lrlqSchmidt, Serial Number 93,596, filed April 26, 1916, which has an included friction member, shoes arranged therearound and wedging means adapted to press the shoes against the included friction member and drive them longitudinally thereof, and consists in means for prevcnting the shoes and wedges from sticking to-- gether when the pressure on the gear abates.

Referring to the drawings, in which l have shown my invention applied to a shock absorbing mechanism oi the included friction member type, 2 indicates the central friction element, having friction shoes or members 3, arranged between the arms thereor, and held against the friction faces of such arms by nlcansoi wedges l, which encircle the friction element 2. To prevent the wedges and shoes from sticking together when the rigging is relieved from the pressures of butting and draft, I provide soft In'ctalinserts or pads 5, preferably made of brass, or similar metal, which I have shown as being seated in recesses or depressions 6 in the wedges at, and follower 7, and bearing on the friction shoes 3. 'I have shown the edges of the recess (3 undercut at 8, so as to afford an anchorage in the wedge 4: or follower 7 for the insert.

Where the arms of the central friction wedges or followers in butting and in draft and as the insert or pad is ofsoi'ter material. than the member upon which it bears, there will be a tendency of the harder material to cut into the softer. To obviate such tend.- ency, the bearing face of the insert or pad is made of lesser extent than the cooperating face on the opposing member, so that the harder member will not cut into the face of the insert or pad, as is best shown in Fig. 2, in which the shoe 3 is indicated as having its edges extended out beyond the edges of the insert or pad.

As is shown in Fig. 8, the insert 5 is shown as being formed of cup-shape. it is applied by placing it in therecess 6 in the wedge d, and by flattening it out under pressure so that it expands in the recess and forms a secure interlock with the metal oi the part to which it is attached.

In Fig. 5 the pad orinsert 5 is shown with a flange 9, which inserted in the recess, and which, when pressureis applied, will espand outwardly, as is shown in dotted lines to dovetail in the undercut portion of the recess or depression. When secured in the member the flange 9 will till the undcrcut sides of the recess 6, as is indicated in Fig. l.

In Fig. (l I harhshown the depressions or recesses (3 termed without undercut edges or sides, and thc inserts 5 are held in position by the tightness of their fit and by their bearing; upon the opposing faces of the shoes.

In Fig. 7 l have shown the inserts 5 as being; formed with stems l0, wl'iich are riveted over, as shown.

In each instance it is to be observed that the pad sunk into the part to which it is attached in such manner as to obtain the greatest amount of metal to resist shear' stresses.

fly invention is of particular advantage in securing a positive r lease of the wedges from the shoes, in. a gear of the type described, when the gear is subjected to heavy shocks, since it overcomes a tendency on the part of the wedges and shoes to stick together, even after the pressure is entirely relieved.

4 Other .ad 'antagcs are that the anti-friction quality of the inserts allows an easy disengagement between wedges and shoes at 271E333, span nu file moment i n? brass, 211 Bin? 3;

se; to member 5 30 i um? 0pmu. but also the brass, 21$; 1's (Fi i mmnbev forgns a fine sum ab Hm 8130 39 \Yhivk m. K; 'wximm shock absofir" v smooth 511M310 ism :1 friction 010mm a plum. The '2: expressions wQ wt-v mm 1 (1115M about said employed are used as 3mm 1; of descrip ol xnm'zt inn t i Tia-60ml engagemm moreand 1101; limit: m, and have no i @011 member having; an in- "Edam in the use such terms m6? holy-Friction face, a wedge s c-tqchldhlg 2 .1 1 mechx ,7 an inclined \codgz ix'lg fnw, a "6- L Wadging lace of each iix'iciiion member and an inclined 1 2100, 0? Hm wedge and. (2:111:11

in arm 0 f said nmmlm's, said infiid fiction membm: mu?

, [he matures 10*.21 um bun recognize t m. various modifii, b'd nude wizihil'l. the scope'm? film clahnefl. in a TB 1 but T in is: scrtspacing; n'y

211. shock absm'bing medhw Wedge and mmmainingi them out of con-- inst \T'xth. zzm-h Mm in 3H poqitions we siivking: 'mge'i her upon "event the, opposing; fiwi's in; 2:101 other.

"FIN. 

